Search giant Google ramped up the pressure on Skype, Microsoft and others last week by acquiring web telephony startup GrandCentral Communications for an undisclosed sum.

GrandCentral’s technology allows users to manage all their numbers through one interface and one number that can be applied to ring all, or any of, the user’s phones.

Google product manager Wesley Chan wrote on his company blog that “GrandCentral is an innovative service that lets users integrate all of their existing phone numbers and voice mailboxes into one account, which can be accessed from the web.”